.banner{
    position: relative;
    /* overflow: hidden; */
    width: 100%;
    height: 180px;
    background-color: #f7f8f9;
    /* margin-bottom: 30px; */
}
.banner-c{
    position: absolute;
    top: 0;
    left: 50%;
    margin-left: -600px;
    width: 1200px;
    height: 180px;
    text-align: center;
}
.banner-c h1 {
    margin-top: 63px;
    font-size: 32px;
    color: #181818;
}

.banner-c h2 {
    font-size: 14px;
    color: #c3c3c3;
}


.main{
    position: relative;
    overflow: hidden;
    width: 1200px;
    margin: 0 auto;
}
 /* 内容 */
 .main .ui {
    position: relative;
    overflow: hidden;
    margin-top: 50px;
    width: 810px;
    margin-bottom: 55px;
    /* margin: 0 auto; */
}

.main span {
    position: absolute;
    left: 0px;
    bottom: 0px;
    width: 100%;
    height: 1px;
    background-color: rgba(0, 0, 0, .5);
    opacity: 0.1;
}

.descr,
.ui img {
    float: left;
}

.ui img {
    margin-right: 80px;
}


.descr h1 {
    font-size: 16px;
    font-weight: bolder;
    color: #525252;
}

.descr ul li {
    height: 25px;
    font-size: 14px;
    line-height: 25px;
    color: #525252;
}

.descr .fir {
    margin-bottom: 44px;
}
.descr h2{
    font-size: 18px;
    color: #525252;
    margin-top: 96px;
}

.foot{
    margin-top: 120px;
}
@media screen and (max-width:768px){
    .banner{
        width: 100%;
    }
    .banner-c{
    top: 0;
    left: 0;
    margin-left: 0;
    width: 100%;
    /* height: 180px; */
    text-align: center;
    }
    .main{
        width: 90%;
    }
    .main .ui {
        width: 100%;
        /* height: auto; */
        text-align: center;
    }
    .descr
    ,.ui img {
    float: none;
    }

    .ui img {
    margin-right: 0;
    }
    .descr .fir {
        margin-bottom: 20px;
    }
    .descr ul li {
        height: auto;
    }
}